// Project64 - A Nintendo 64 emulator
// https://www.pj64-emu.com/
// Copyright(C) 2001-2021 Project64
// Copyright(C) 2003-2009 Sergey 'Gonetz' Lipski
// Copyright(C) 2002 Dave2001
// GNU/GPLv2 licensed: https://gnu.org/licenses/gpl-2.0.html

#include <Project64-video/Renderer/Renderer.h>

#ifdef _WIN32
#include <windows.h>
#else // _WIN32
#include <string.h>
#include <stdlib.h>
#endif // _WIN32
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "glitchmain.h"
#include <Project64-video/trace.h>

static int fct[4], source0[4], operand0[4], source1[4], operand1[4], source2[4], operand2[4];
static int fcta[4], sourcea0[4], operanda0[4], sourcea1[4], operanda1[4], sourcea2[4], operanda2[4];
static int alpha_ref;
static gfxCmpFnc_t alpha_func;

float texture_env_color[4];
float ccolor0[4];
float ccolor1[4];
static float chroma_color[4];
int fog_enabled;
static int chroma_enabled;
static int chroma_other_color;
static int chroma_other_alpha;
static int dither_enabled;
int blackandwhite0;
int blackandwhite1;
#ifdef _WIN32
static float farF;
static float nearF;
#endif // _WIN32

int need_lambda[2];
float lambda_color[2][4];

// Shaders variables
int need_to_compile;

static GLhandleARB fragment_shader_object;
static GLhandleARB fragment_depth_shader_object;
static GLhandleARB vertex_shader_object;
static GLhandleARB program_object_default;
static GLhandleARB program_object_depth;
static GLhandleARB program_object;
static int constant_color_location;
static int ccolor0_location;
static int ccolor1_location;
static int first_color = 1;
static int first_alpha = 1;
static int first_texture0 = 1;
static int first_texture1 = 1;
static int tex0_combiner_ext = 0;
static int tex1_combiner_ext = 0;
static int c_combiner_ext = 0;
static int a_combiner_ext = 0;

static const char* fragment_shader_header =
"uniform sampler2D texture0;       \n"
"uniform sampler2D texture1;       \n"
"uniform sampler2D ditherTex;      \n"
"uniform vec4 constant_color;      \n"
"uniform vec4 ccolor0;             \n"
"uniform vec4 ccolor1;             \n"
"uniform vec4 chroma_color;        \n"
"uniform float lambda;             \n"
"varying vec4 fogValue;            \n"
"                                  \n"
"void test_chroma(vec4 ctexture1); \n"
"                                  \n"
"                                  \n"
"void main()                       \n"
"{                                 \n"
;

// Using gl_FragCoord is terribly slow on ATI and varying variables don't work for some unknown
// reason, so we use the unused components of the texture2 coordinates
static const char* fragment_shader_dither =
"  float dithx = (gl_TexCoord[2].b + 1.0)*0.5*1000.0; \n"
"  float dithy = (gl_TexCoord[2].a + 1.0)*0.5*1000.0; \n"
"  if(texture2D(ditherTex, vec2((dithx-32.0*floor(dithx/32.0))/32.0, \n"
"                               (dithy-32.0*floor(dithy/32.0))/32.0)).a > 0.5) discard; \n"
;

static const char* fragment_shader_default =
"  gl_FragColor = texture2D(texture0, vec2(gl_TexCoord[0])); \n"
;

static const char* fragment_shader_readtex0color =
"  vec4 readtex0 = texture2D(texture0, vec2(gl_TexCoord[0])); \n"
;

static const char* fragment_shader_readtex0bw =
"  vec4 readtex0 = texture2D(texture0, vec2(gl_TexCoord[0])); \n"
"  readtex0 = vec4(vec3(readtex0.b),                          \n"
"                  readtex0.r + readtex0.g * 8.0 / 256.0);    \n"
;
static const char* fragment_shader_readtex0bw_2 =
"  vec4 readtex0 = vec4(dot(texture2D(texture0, vec2(gl_TexCoord[0])), vec4(1.0/3, 1.0/3, 1.0/3, 0)));                        \n"
;

static const char* fragment_shader_readtex1color =
"  vec4 readtex1 = texture2D(texture1, vec2(gl_TexCoord[1])); \n"
;

static const char* fragment_shader_readtex1bw =
"  vec4 readtex1 = texture2D(texture1, vec2(gl_TexCoord[1])); \n"
"  readtex1 = vec4(vec3(readtex1.b),                          \n"
"                  readtex1.r + readtex1.g * 8.0 / 256.0);    \n"
;
static const char* fragment_shader_readtex1bw_2 =
"  vec4 readtex1 = vec4(dot(texture2D(texture1, vec2(gl_TexCoord[1])), vec4(1.0/3, 1.0/3, 1.0/3, 0)));                        \n"
;

static const char* fragment_shader_fog =
"  float fog;                                                                         \n"
"  fog = gl_TexCoord[0].b;                                                            \n"
"  gl_FragColor = vec4(mix(gl_Fog.color.rgb, gl_FragColor.rgb, fog), gl_FragColor.a); \n"
;

static const char* fragment_shader_end =
"}                               \n"
;

static const char* vertex_shader =
"varying vec4 fogValue;                                         \n"
"                                                               \n"
"void main()                                                    \n"
"{                                                              \n"
"  gl_Position = ftransform();                                  \n"
"  gl_FrontColor = gl_Color;                                    \n"
"  gl_TexCoord[0] = gl_MultiTexCoord0;                          \n"
"  gl_TexCoord[1] = gl_MultiTexCoord1;                          \n"
"  float f = (gl_Fog.end - gl_SecondaryColor.r) * gl_Fog.scale; \n" // TODO: Fog value passed through secondary color (workaround ATI bug)
"  f = clamp(f, 0.0, 1.0);                                      \n"
"  gl_TexCoord[0].b = f;                                        \n" // Various data passed through
"  gl_TexCoord[2].b = gl_Vertex.x;                              \n" // Texture coordinates
"  gl_TexCoord[2].a = gl_Vertex.y;                              \n" // Again it is the only way
"}                                                              \n" // I've found to get it working fast with ATI drivers
;

static char fragment_shader_color_combiner[1024];
static char fragment_shader_alpha_combiner[1024];
static char fragment_shader_texture1[1024];
static char fragment_shader_texture0[1024];
static char fragment_shader_chroma[1024];
static char shader_log[2048];

void updateCombiner(int i)
{
    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
    glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, fct[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, source0[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, operand0[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, source1[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, operand1[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, source2[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, operand2[i]);

    grDisplayGLError("updateCombiner");
}

void updateCombinera(int i)
{
    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
    glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, fcta[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, sourcea0[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, operanda0[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, sourcea1[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, operanda1[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, sourcea2[i]);
    glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, operanda2[i]);

    grDisplayGLError("updateCombinera");
}

void init_combiner()
{
    int texture[4] = { 0, 0, 0, 0 };

    glActiveTextureARB(GL_TEXTURE0_ARB);
    glEnable(GL_TEXTURE_2D);

    // Creating a fake texture
    glBindTexture(GL_TEXTURE_2D, default_texture);
    glTexImage2D(GL_TEXTURE_2D, 0, 3, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

    glActiveTextureARB(GL_TEXTURE1_ARB);
    glBindTexture(GL_TEXTURE_2D, default_texture);
    glEnable(GL_TEXTURE_2D);

    int texture0_location;
    int texture1_location;
    char *fragment_shader;
    int log_length;

    // Depth shader
    fragment_depth_shader_object = glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB);

    char s[128];
    // (Comment by Ziggy) Convert a 565 texture into depth component
    sprintf(s, "gl_FragDepth = dot(texture2D(texture0, vec2(gl_TexCoord[0])), vec4(31*64*32, 63*32, 31, 0))*%g + %g; \n", zscale / 2 / 65535.0, 1 - zscale / 2);
    fragment_shader = (char*)malloc(strlen(fragment_shader_header) +
        strlen(s) +
        strlen(fragment_shader_end) + 1);
    strcpy(fragment_shader, fragment_shader_header);
    strcat(fragment_shader, s);
    strcat(fragment_shader, fragment_shader_end);
    glShaderSourceARB(fragment_depth_shader_object, 1, (const GLcharARB**)&fragment_shader, nullptr);
    free(fragment_shader);

    glCompileShaderARB(fragment_depth_shader_object);

    // Default shader
    fragment_shader_object = glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB);

    fragment_shader = (char*)malloc(strlen(fragment_shader_header) +
        strlen(fragment_shader_default) +
        strlen(fragment_shader_end) + 1);
    strcpy(fragment_shader, fragment_shader_header);
    strcat(fragment_shader, fragment_shader_default);
    strcat(fragment_shader, fragment_shader_end);
    glShaderSourceARB(fragment_shader_object, 1, (const GLcharARB**)&fragment_shader, nullptr);
    free(fragment_shader);

    glCompileShaderARB(fragment_shader_object);

    vertex_shader_object = glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB);
    glShaderSourceARB(vertex_shader_object, 1, &vertex_shader, nullptr);
    glCompileShaderARB(vertex_shader_object);

    // Depth program
    program_object = glCreateProgramObjectARB();
    program_object_depth = program_object;
    glAttachObjectARB(program_object, fragment_depth_shader_object);
    glAttachObjectARB(program_object, vertex_shader_object);
    glLinkProgramARB(program_object);
    glUseProgramObjectARB(program_object);

    glGetObjectParameterivARB(program_object, GL_OBJECT_LINK_STATUS_ARB, &log_length);
    if (!log_length)
    {
        glGetInfoLogARB(fragment_shader_object, 2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
        glGetInfoLogARB(vertex_shader_object, 2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
        glGetInfoLogARB(program_object, 2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
    }

    texture0_location = glGetUniformLocationARB(program_object, "texture0");
    texture1_location = glGetUniformLocationARB(program_object, "texture1");
    glUniform1iARB(texture0_location, 0);
    glUniform1iARB(texture1_location, 1);

    // Default program
    program_object = glCreateProgramObjectARB();
    program_object_default = program_object;
    glAttachObjectARB(program_object, fragment_shader_object);
    glAttachObjectARB(program_object, vertex_shader_object);
    glLinkProgramARB(program_object);
    glUseProgramObjectARB(program_object);

    glGetObjectParameterivARB(program_object, GL_OBJECT_LINK_STATUS_ARB, &log_length);
    if (!log_length)
    {
        glGetInfoLogARB(fragment_shader_object, 2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
        glGetInfoLogARB(vertex_shader_object, 2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
        glGetInfoLogARB(program_object, 2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
    }

    texture0_location = glGetUniformLocationARB(program_object, "texture0");
    texture1_location = glGetUniformLocationARB(program_object, "texture1");
    glUniform1iARB(texture0_location, 0);
    glUniform1iARB(texture1_location, 1);

    strcpy(fragment_shader_color_combiner, "");
    strcpy(fragment_shader_alpha_combiner, "");
    strcpy(fragment_shader_texture1, "vec4 ctexture1 = texture2D(texture0, vec2(gl_TexCoord[0])); \n");
    strcpy(fragment_shader_texture0, "");

    first_color = 1;
    first_alpha = 1;
    first_texture0 = 1;
    first_texture1 = 1;
    need_to_compile = 0;
    fog_enabled = 0;
    chroma_enabled = 0;
    dither_enabled = 0;
    blackandwhite0 = 0;
    blackandwhite1 = 0;

    grDisplayGLError("init_combiner");
}

void compile_chroma_shader()
{
    strcpy(fragment_shader_chroma, "\nvoid test_chroma(vec4 ctexture1)\n{\n");

    switch (chroma_other_alpha)
    {
    case GFX_COMBINE_OTHER_ITERATED:
        strcat(fragment_shader_chroma, "float alpha = gl_Color.a; \n");
        break;
    case GFX_COMBINE_OTHER_TEXTURE:
        strcat(fragment_shader_chroma, "float alpha = ctexture1.a; \n");
        break;
    case GFX_COMBINE_OTHER_CONSTANT:
        strcat(fragment_shader_chroma, "float alpha = constant_color.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown compile_choma_shader_alpha : %x", chroma_other_alpha);
    }

    switch (chroma_other_color)
    {
    case GFX_COMBINE_OTHER_ITERATED:
        strcat(fragment_shader_chroma, "vec4 color = vec4(vec3(gl_Color),alpha); \n");
        break;
    case GFX_COMBINE_OTHER_TEXTURE:
        strcat(fragment_shader_chroma, "vec4 color = vec4(vec3(ctexture1),alpha); \n");
        break;
    case GFX_COMBINE_OTHER_CONSTANT:
        strcat(fragment_shader_chroma, "vec4 color = vec4(vec3(constant_color),alpha); \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown compile_choma_shader_alpha : %x", chroma_other_color);
    }

    strcat(fragment_shader_chroma, "if (color.rgb == chroma_color.rgb) discard; \n");
    strcat(fragment_shader_chroma, "}");

    grDisplayGLError("compile_chroma_shader");
}

typedef struct _shader_program_key
{
    int color_combiner;
    int alpha_combiner;
    int texture0_combiner;
    int texture1_combiner;
    int texture0_combinera;
    int texture1_combinera;
    int fog_enabled;
    int chroma_enabled;
    int dither_enabled;
    int blackandwhite0;
    int blackandwhite1;
    GLhandleARB fragment_shader_object;
    GLhandleARB program_object;
} shader_program_key;

static shader_program_key* shader_programs = nullptr;
static int number_of_programs = 0;
static int color_combiner_key;
static int alpha_combiner_key;
static int texture0_combiner_key;
static int texture1_combiner_key;
static int texture0_combinera_key;
static int texture1_combinera_key;

void compile_shader()
{
    int texture0_location;
    int texture1_location;
    int ditherTex_location;
    char *fragment_shader;
    int i;
    int chroma_color_location;
    int log_length;

    need_to_compile = 0;

    for (i = 0; i < number_of_programs; i++)
    {
        if (shader_programs[i].color_combiner == color_combiner_key &&
            shader_programs[i].alpha_combiner == alpha_combiner_key &&
            shader_programs[i].texture0_combiner == texture0_combiner_key &&
            shader_programs[i].texture1_combiner == texture1_combiner_key &&
            shader_programs[i].texture0_combinera == texture0_combinera_key &&
            shader_programs[i].texture1_combinera == texture1_combinera_key &&
            shader_programs[i].fog_enabled == fog_enabled &&
            shader_programs[i].chroma_enabled == chroma_enabled &&
            shader_programs[i].dither_enabled == dither_enabled &&
            shader_programs[i].blackandwhite0 == blackandwhite0 &&
            shader_programs[i].blackandwhite1 == blackandwhite1)
        {
            program_object = shader_programs[i].program_object;
            glUseProgramObjectARB(program_object);

            texture0_location = glGetUniformLocationARB(program_object, "texture0");
            texture1_location = glGetUniformLocationARB(program_object, "texture1");
            glUniform1iARB(texture0_location, 0);
            glUniform1iARB(texture1_location, 1);

            constant_color_location = glGetUniformLocationARB(program_object, "constant_color");
            glUniform4fARB(constant_color_location, texture_env_color[0], texture_env_color[1],
                texture_env_color[2], texture_env_color[3]);

            ccolor0_location = glGetUniformLocationARB(program_object, "ccolor0");
            glUniform4fARB(ccolor0_location, ccolor0[0], ccolor0[1], ccolor0[2], ccolor0[3]);

            ccolor1_location = glGetUniformLocationARB(program_object, "ccolor1");
            glUniform4fARB(ccolor1_location, ccolor1[0], ccolor1[1], ccolor1[2], ccolor1[3]);

            chroma_color_location = glGetUniformLocationARB(program_object, "chroma_color");
            glUniform4fARB(chroma_color_location, chroma_color[0], chroma_color[1],
                chroma_color[2], chroma_color[3]);

            if (dither_enabled)
            {
                ditherTex_location = glGetUniformLocationARB(program_object, "ditherTex");
                glUniform1iARB(ditherTex_location, 2);
            }

            set_lambda();
            return;
        }
    }

    if (shader_programs != nullptr)
        shader_programs = (shader_program_key*)realloc(shader_programs, (number_of_programs + 1) * sizeof(shader_program_key));
    else
        shader_programs = (shader_program_key*)malloc(sizeof(shader_program_key));
    //printf("Number of shaders %d\n", number_of_programs);

    shader_programs[number_of_programs].color_combiner = color_combiner_key;
    shader_programs[number_of_programs].alpha_combiner = alpha_combiner_key;
    shader_programs[number_of_programs].texture0_combiner = texture0_combiner_key;
    shader_programs[number_of_programs].texture1_combiner = texture1_combiner_key;
    shader_programs[number_of_programs].texture0_combinera = texture0_combinera_key;
    shader_programs[number_of_programs].texture1_combinera = texture1_combinera_key;
    shader_programs[number_of_programs].fog_enabled = fog_enabled;
    shader_programs[number_of_programs].chroma_enabled = chroma_enabled;
    shader_programs[number_of_programs].dither_enabled = dither_enabled;
    shader_programs[number_of_programs].blackandwhite0 = blackandwhite0;
    shader_programs[number_of_programs].blackandwhite1 = blackandwhite1;

    if (chroma_enabled)
    {
        strcat(fragment_shader_texture1, "test_chroma(ctexture1); \n");
        compile_chroma_shader();
    }

    fragment_shader = (char*)malloc(4096);

    strcpy(fragment_shader, fragment_shader_header);
    if (dither_enabled) strcat(fragment_shader, fragment_shader_dither);
    switch (blackandwhite0) {
    case 1: strcat(fragment_shader, fragment_shader_readtex0bw); break;
    case 2: strcat(fragment_shader, fragment_shader_readtex0bw_2); break;
    default: strcat(fragment_shader, fragment_shader_readtex0color);
    }
    switch (blackandwhite1) {
    case 1: strcat(fragment_shader, fragment_shader_readtex1bw); break;
    case 2: strcat(fragment_shader, fragment_shader_readtex1bw_2); break;
    default: strcat(fragment_shader, fragment_shader_readtex1color);
    }
    strcat(fragment_shader, fragment_shader_texture0);
    strcat(fragment_shader, fragment_shader_texture1);
    strcat(fragment_shader, fragment_shader_color_combiner);
    strcat(fragment_shader, fragment_shader_alpha_combiner);
    if (fog_enabled) strcat(fragment_shader, fragment_shader_fog);
    strcat(fragment_shader, fragment_shader_end);
    if (chroma_enabled) strcat(fragment_shader, fragment_shader_chroma);

    shader_programs[number_of_programs].fragment_shader_object = glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB);
    glShaderSourceARB(shader_programs[number_of_programs].fragment_shader_object, 1, (const GLcharARB**)&fragment_shader, nullptr);
    free(fragment_shader);

    glCompileShaderARB(shader_programs[number_of_programs].fragment_shader_object);

    program_object = glCreateProgramObjectARB();
    shader_programs[number_of_programs].program_object = program_object;
    glAttachObjectARB(program_object, shader_programs[number_of_programs].fragment_shader_object);
    glAttachObjectARB(program_object, vertex_shader_object);
    glLinkProgramARB(program_object);
    glUseProgramObjectARB(program_object);

    glGetObjectParameterivARB(program_object, GL_OBJECT_LINK_STATUS_ARB, &log_length);
    if (!log_length)
    {
        glGetInfoLogARB(shader_programs[number_of_programs].fragment_shader_object,
            2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
        glGetInfoLogARB(vertex_shader_object, 2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
        glGetInfoLogARB(program_object,
            2048, &log_length, shader_log);
        if (log_length) WriteTrace(TraceGlitch, TraceWarning, shader_log);
    }

    texture0_location = glGetUniformLocationARB(program_object, "texture0");
    texture1_location = glGetUniformLocationARB(program_object, "texture1");
    glUniform1iARB(texture0_location, 0);
    glUniform1iARB(texture1_location, 1);

    constant_color_location = glGetUniformLocationARB(program_object, "constant_color");
    glUniform4fARB(constant_color_location, texture_env_color[0], texture_env_color[1],
        texture_env_color[2], texture_env_color[3]);

    ccolor0_location = glGetUniformLocationARB(program_object, "ccolor0");
    glUniform4fARB(ccolor0_location, ccolor0[0], ccolor0[1], ccolor0[2], ccolor0[3]);

    ccolor1_location = glGetUniformLocationARB(program_object, "ccolor1");
    glUniform4fARB(ccolor1_location, ccolor1[0], ccolor1[1], ccolor1[2], ccolor1[3]);

    chroma_color_location = glGetUniformLocationARB(program_object, "chroma_color");
    glUniform4fARB(chroma_color_location, chroma_color[0], chroma_color[1],
        chroma_color[2], chroma_color[3]);

    if (dither_enabled)
    {
        ditherTex_location = glGetUniformLocationARB(program_object, "ditherTex");
        glUniform1iARB(ditherTex_location, 2);
    }

    set_lambda();
    number_of_programs++;

    grDisplayGLError("compile_shader");
}

void free_combiners()
{
    free(shader_programs);
    shader_programs = nullptr;
    number_of_programs = 0;
}

void set_copy_shader()
{
    int texture0_location;

    glUseProgramObjectARB(program_object_default);
    texture0_location = glGetUniformLocationARB(program_object, "texture0");
    glUniform1iARB(texture0_location, 0);

    grDisplayGLError("set_copy_shader");
}

void set_depth_shader()
{
    int texture0_location;

    glUseProgramObjectARB(program_object_depth);
    texture0_location = glGetUniformLocationARB(program_object, "texture0");
    glUniform1iARB(texture0_location, 0);

    grDisplayGLError("set_depth_shader");
}

void set_lambda()
{
    int lambda_location = glGetUniformLocationARB(program_object, "lambda");
    glUniform1fARB(lambda_location, lambda);

    grDisplayGLError("set_lambda");
}

void gfxConstantColorValue(gfxColor_t value)
{
    WriteTrace(TraceGlitch, TraceDebug, "value: %d", value);
    switch (lfb_color_fmt)
    {
    case GFX_COLORFORMAT_ARGB:
        texture_env_color[3] = ((value >> 24) & 0xFF) / 255.0f;
        texture_env_color[0] = ((value >> 16) & 0xFF) / 255.0f;
        texture_env_color[1] = ((value >> 8) & 0xFF) / 255.0f;
        texture_env_color[2] = (value & 0xFF) / 255.0f;
        break;
    case GFX_COLORFORMAT_RGBA:
        texture_env_color[0] = ((value >> 24) & 0xFF) / 255.0f;
        texture_env_color[1] = ((value >> 16) & 0xFF) / 255.0f;
        texture_env_color[2] = ((value >> 8) & 0xFF) / 255.0f;
        texture_env_color[3] = (value & 0xFF) / 255.0f;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxConstantColorValue: Unknown color format : %x", lfb_color_fmt);
    }

    constant_color_location = glGetUniformLocationARB(program_object, "constant_color");
    glUniform4fARB(constant_color_location, texture_env_color[0], texture_env_color[1],
        texture_env_color[2], texture_env_color[3]);

    grDisplayGLError("gfxConstantColorValue");
}

int setOtherColorSource(int other)
{
    switch (other)
    {
    case GFX_COMBINE_OTHER_ITERATED:
        return GL_PRIMARY_COLOR_ARB;
        break;
    case GFX_COMBINE_OTHER_TEXTURE:
        return GL_PREVIOUS_ARB;
        break;
    case GFX_COMBINE_OTHER_CONSTANT:
        return GL_CONSTANT_ARB;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown other color source : %x", other);
    }
    return 0;
}

int setLocalColorSource(int local)
{
    switch (local)
    {
    case GFX_COMBINE_LOCAL_ITERATED:
        return GL_PRIMARY_COLOR_ARB;
        break;
    case GFX_COMBINE_LOCAL_CONSTANT:
        return GL_CONSTANT_ARB;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown local color source : %x", local);
    }
    return 0;
}

void writeGLSLColorOther(int other)
{
    switch (other)
    {
    case GFX_COMBINE_OTHER_ITERATED:
        strcat(fragment_shader_color_combiner, "vec4 color_other = gl_Color; \n");
        break;
    case GFX_COMBINE_OTHER_TEXTURE:
        strcat(fragment_shader_color_combiner, "vec4 color_other = ctexture1; \n");
        break;
    case GFX_COMBINE_OTHER_CONSTANT:
        strcat(fragment_shader_color_combiner, "vec4 color_other = constant_color; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown writeGLSLColorOther : %x", other);
    }
}

void writeGLSLColorLocal(int local)
{
    switch (local)
    {
    case GFX_COMBINE_LOCAL_ITERATED:
        strcat(fragment_shader_color_combiner, "vec4 color_local = gl_Color; \n");
        break;
    case GFX_COMBINE_LOCAL_CONSTANT:
        strcat(fragment_shader_color_combiner, "vec4 color_local = constant_color; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown writeGLSLColorLocal : %x", local);
    }
}

void writeGLSLColorFactor(int factor, int local, int need_local, int other, int need_other)
{
    switch (factor)
    {
    case GFX_COMBINE_FACTOR_ZERO:
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(0.0); \n");
        break;
    case GFX_COMBINE_FACTOR_LOCAL:
        if (need_local) writeGLSLColorLocal(local);
        strcat(fragment_shader_color_combiner, "vec4 color_factor = color_local; \n");
        break;
    case GFX_COMBINE_FACTOR_OTHER_ALPHA:
        if (need_other) writeGLSLColorOther(other);
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(color_other.a); \n");
        break;
    case GFX_COMBINE_FACTOR_LOCAL_ALPHA:
        if (need_local) writeGLSLColorLocal(local);
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(color_local.a); \n");
        break;
    case GFX_COMBINE_FACTOR_TEXTURE_ALPHA:
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(ctexture1.a); \n");
        break;
    case GFX_COMBINE_FACTOR_TEXTURE_RGB:
        strcat(fragment_shader_color_combiner, "vec4 color_factor = ctexture1; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE:
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(1.0); \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_LOCAL:
        if (need_local) writeGLSLColorLocal(local);
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(1.0) - color_local; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_OTHER_ALPHA:
        if (need_other) writeGLSLColorOther(other);
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(1.0) - vec4(color_other.a); \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_LOCAL_ALPHA:
        if (need_local) writeGLSLColorLocal(local);
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(1.0) - vec4(color_local.a); \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_TEXTURE_ALPHA:
        strcat(fragment_shader_color_combiner, "vec4 color_factor = vec4(1.0) - vec4(ctexture1.a); \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown writeGLSLColorFactor : %x", factor);
    }
}

void gfxColorCombine(gfxCombineFunction_t function, gfxCombineFactor_t factor, gfxCombineLocal_t local, gfxCombineOther_t other, bool invert)
{
    WriteTrace(TraceGlitch, TraceDebug, "Function: %d factor: %d local: %d other: %d invert: %d", function, factor, local, other, invert);

    static int last_function = 0;
    static int last_factor = 0;
    static int last_local = 0;
    static int last_other = 0;

    if (last_function == function && last_factor == factor &&
        last_local == local && last_other == other && first_color == 0 && !c_combiner_ext) return;
    first_color = 0;
    c_combiner_ext = 0;

    last_function = function;
    last_factor = factor;
    last_local = local;
    last_other = other;

    if (invert) WriteTrace(TraceGlitch, TraceWarning, "Inverted result");

    color_combiner_key = function | (factor << 4) | (local << 8) | (other << 10);
    chroma_other_color = other;

    strcpy(fragment_shader_color_combiner, "");
    switch (function)
    {
    case GFX_COMBINE_FUNCTION_ZERO:
        strcat(fragment_shader_color_combiner, "gl_FragColor = vec4(0.0); \n");
        break;
    case GFX_COMBINE_FUNCTION_LOCAL:
        writeGLSLColorLocal(local);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_LOCAL_ALPHA:
        writeGLSLColorLocal(local);
        strcat(fragment_shader_color_combiner, "gl_FragColor = vec4(color_local.a); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER:
        writeGLSLColorOther(other);
        writeGLSLColorFactor(factor, local, 1, other, 0);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_factor * color_other; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL:
        writeGLSLColorLocal(local);
        writeGLSLColorOther(other);
        writeGLSLColorFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_factor * color_other + color_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL_ALPHA:
        writeGLSLColorLocal(local);
        writeGLSLColorOther(other);
        writeGLSLColorFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_factor * color_other + vec4(color_local.a); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL:
        writeGLSLColorLocal(local);
        writeGLSLColorOther(other);
        writeGLSLColorFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_factor * (color_other - color_local); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL_ADD_LOCAL:
        writeGLSLColorLocal(local);
        writeGLSLColorOther(other);
        writeGLSLColorFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_factor * (color_other - color_local) + color_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL_ADD_LOCAL_ALPHA:
        writeGLSLColorLocal(local);
        writeGLSLColorOther(other);
        writeGLSLColorFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_factor * (color_other - color_local) + vec4(color_local.a); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_MINUS_LOCAL_ADD_LOCAL:
        writeGLSLColorLocal(local);
        writeGLSLColorFactor(factor, local, 0, other, 1);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_factor * (-color_local) + color_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_MINUS_LOCAL_ADD_LOCAL_ALPHA:
        writeGLSLColorLocal(local);
        writeGLSLColorFactor(factor, local, 0, other, 1);
        strcat(fragment_shader_color_combiner, "gl_FragColor = color_factor * (-color_local) + vec4(color_local.a); \n");
        break;
    default:
        strcpy(fragment_shader_color_combiner, fragment_shader_default);
        WriteTrace(TraceGlitch, TraceWarning, "Unknown function : %x", function);
    }
    //compile_shader();
    need_to_compile = 1;
}

int setOtherAlphaSource(int other)
{
    switch (other)
    {
    case GFX_COMBINE_OTHER_ITERATED:
        return GL_PRIMARY_COLOR_ARB;
        break;
    case GFX_COMBINE_OTHER_TEXTURE:
        return GL_PREVIOUS_ARB;
        break;
    case GFX_COMBINE_OTHER_CONSTANT:
        return GL_CONSTANT_ARB;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown other alpha source : %x", other);
    }
    return 0;
}

int setLocalAlphaSource(int local)
{
    switch (local)
    {
    case GFX_COMBINE_LOCAL_ITERATED:
        return GL_PRIMARY_COLOR_ARB;
        break;
    case GFX_COMBINE_LOCAL_CONSTANT:
        return GL_CONSTANT_ARB;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown local alpha source : %x", local);
    }
    return 0;
}

void writeGLSLAlphaOther(int other)
{
    switch (other)
    {
    case GFX_COMBINE_OTHER_ITERATED:
        strcat(fragment_shader_alpha_combiner, "float alpha_other = gl_Color.a; \n");
        break;
    case GFX_COMBINE_OTHER_TEXTURE:
        strcat(fragment_shader_alpha_combiner, "float alpha_other = ctexture1.a; \n");
        break;
    case GFX_COMBINE_OTHER_CONSTANT:
        strcat(fragment_shader_alpha_combiner, "float alpha_other = constant_color.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown writeGLSLAlphaOther : %x", other);
    }
}

void writeGLSLAlphaLocal(int local)
{
    switch (local)
    {
    case GFX_COMBINE_LOCAL_ITERATED:
        strcat(fragment_shader_alpha_combiner, "float alpha_local = gl_Color.a; \n");
        break;
    case GFX_COMBINE_LOCAL_CONSTANT:
        strcat(fragment_shader_alpha_combiner, "float alpha_local = constant_color.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown writeGLSLAlphaLocal : %x", local);
    }
}

void writeGLSLAlphaFactor(int factor, int local, int need_local, int other, int need_other)
{
    switch (factor)
    {
    case GFX_COMBINE_FACTOR_ZERO:
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = 0.0; \n");
        break;
    case GFX_COMBINE_FACTOR_LOCAL:
        if (need_local) writeGLSLAlphaLocal(local);
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = alpha_local; \n");
        break;
    case GFX_COMBINE_FACTOR_OTHER_ALPHA:
        if (need_other) writeGLSLAlphaOther(other);
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = alpha_other; \n");
        break;
    case GFX_COMBINE_FACTOR_LOCAL_ALPHA:
        if (need_local) writeGLSLAlphaLocal(local);
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = alpha_local; \n");
        break;
    case GFX_COMBINE_FACTOR_TEXTURE_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = ctexture1.a; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE:
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = 1.0; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_LOCAL:
        if (need_local) writeGLSLAlphaLocal(local);
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = 1.0 - alpha_local; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_OTHER_ALPHA:
        if (need_other) writeGLSLAlphaOther(other);
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = 1.0 - alpha_other; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_LOCAL_ALPHA:
        if (need_local) writeGLSLAlphaLocal(local);
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = 1.0 - alpha_local; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_TEXTURE_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float alpha_factor = 1.0 - ctexture1.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown writeGLSLAlphaFactor : %x", factor);
    }
}

void gfxAlphaCombine(gfxCombineFunction_t function, gfxCombineFactor_t factor, gfxCombineLocal_t local, gfxCombineOther_t other, bool invert)
{
    WriteTrace(TraceGlitch, TraceDebug, "Function: %d factor: %d local: %d other: %d invert: %d", function, factor, local, other, invert);
    static int last_function = 0;
    static int last_factor = 0;
    static int last_local = 0;
    static int last_other = 0;

    if (last_function == function && last_factor == factor &&
        last_local == local && last_other == other && first_alpha == 0 && !a_combiner_ext) return;
    first_alpha = 0;
    a_combiner_ext = 0;

    last_function = function;
    last_factor = factor;
    last_local = local;
    last_other = other;

    if (invert) WriteTrace(TraceGlitch, TraceWarning, "Inverted result");

    alpha_combiner_key = function | (factor << 4) | (local << 8) | (other << 10);
    chroma_other_alpha = other;

    strcpy(fragment_shader_alpha_combiner, "");

    switch (function)
    {
    case GFX_COMBINE_FUNCTION_ZERO:
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = 0.0; \n");
        break;
    case GFX_COMBINE_FUNCTION_LOCAL:
        writeGLSLAlphaLocal(local);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_LOCAL_ALPHA:
        writeGLSLAlphaLocal(local);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER:
        writeGLSLAlphaOther(other);
        writeGLSLAlphaFactor(factor, local, 1, other, 0);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_factor * alpha_other; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL:
        writeGLSLAlphaLocal(local);
        writeGLSLAlphaOther(other);
        writeGLSLAlphaFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_factor * alpha_other + alpha_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL_ALPHA:
        writeGLSLAlphaLocal(local);
        writeGLSLAlphaOther(other);
        writeGLSLAlphaFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_factor * alpha_other + alpha_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL:
        writeGLSLAlphaLocal(local);
        writeGLSLAlphaOther(other);
        writeGLSLAlphaFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_factor * (alpha_other - alpha_local); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL_ADD_LOCAL:
        writeGLSLAlphaLocal(local);
        writeGLSLAlphaOther(other);
        writeGLSLAlphaFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_factor * (alpha_other - alpha_local) + alpha_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL_ADD_LOCAL_ALPHA:
        writeGLSLAlphaLocal(local);
        writeGLSLAlphaOther(other);
        writeGLSLAlphaFactor(factor, local, 0, other, 0);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_factor * (alpha_other - alpha_local) + alpha_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_MINUS_LOCAL_ADD_LOCAL:
        writeGLSLAlphaLocal(local);
        writeGLSLAlphaFactor(factor, local, 0, other, 1);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_factor * (-alpha_local) + alpha_local; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_MINUS_LOCAL_ADD_LOCAL_ALPHA:
        writeGLSLAlphaLocal(local);
        writeGLSLAlphaFactor(factor, local, 0, other, 1);
        strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = alpha_factor * (-alpha_local) + alpha_local; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown function : %x", function);
    }

    //compile_shader();
    need_to_compile = 1;
}

void writeGLSLTextureColorFactor(int num_tex, int factor)
{
    switch (factor)
    {
    case GFX_COMBINE_FACTOR_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(0.0); \n");
        break;
    case GFX_COMBINE_FACTOR_LOCAL:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = readtex1; \n");
        break;
    case GFX_COMBINE_FACTOR_OTHER_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(ctexture0.a); \n");
        break;
    case GFX_COMBINE_FACTOR_LOCAL_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(readtex1.a); \n");
        break;
    case GFX_COMBINE_FACTOR_DETAIL_FACTOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(lambda); \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(lambda); \n");
        break;
    case GFX_COMBINE_FACTOR_ONE:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(1.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(1.0); \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_LOCAL:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(1.0) - readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(1.0) - readtex1; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_OTHER_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(1.0) - vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(1.0) - vec4(ctexture0.a); \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_LOCAL_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(1.0) - vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(1.0) - vec4(readtex1.a); \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_DETAIL_FACTOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 texture0_color_factor = vec4(1.0) - vec4(lambda); \n");
        else
            strcat(fragment_shader_texture1, "vec4 texture1_color_factor = vec4(1.0) - vec4(lambda); \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown writeGLSLTextureColorFactor : %x", factor);
    }
}

void writeGLSLTextureAlphaFactor(int num_tex, int factor)
{
    switch (factor)
    {
    case GFX_COMBINE_FACTOR_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = 0.0; \n");
        break;
    case GFX_COMBINE_FACTOR_LOCAL:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = readtex1.a; \n");
        break;
    case GFX_COMBINE_FACTOR_OTHER_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = ctexture0.a; \n");
        break;
    case GFX_COMBINE_FACTOR_LOCAL_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = readtex1.a; \n");
        break;
    case GFX_COMBINE_FACTOR_DETAIL_FACTOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = lambda; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = lambda; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = 1.0; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = 1.0; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_LOCAL:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = 1.0 - readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = 1.0 - readtex1.a; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_OTHER_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = 1.0 - 0.0; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = 1.0 - ctexture0.a; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_LOCAL_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = 1.0 - readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = 1.0 - readtex1.a; \n");
        break;
    case GFX_COMBINE_FACTOR_ONE_MINUS_DETAIL_FACTOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "float texture0_alpha_factor = 1.0 - lambda; \n");
        else
            strcat(fragment_shader_texture1, "float texture1_alpha_factor = 1.0 - lambda; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown writeGLSLTextureAlphaFactor : %x", factor);
    }
}

void gfxTexCombine(gfxChipID_t tmu, gfxCombineFunction_t rgb_function, gfxCombineFactor_t rgb_factor, gfxCombineFunction_t alpha_function, gfxCombineFactor_t alpha_factor, bool rgb_invert, bool alpha_invert)
{
    WriteTrace(TraceGlitch, TraceDebug, "tmu: %d rgb_function: %d rgb_factor: %d alpha_function: %d alpha_factor: %d rgb_invert: %d alpha_invert: %d", tmu, rgb_function, rgb_factor, alpha_function, alpha_factor, rgb_invert, alpha_invert);
    int num_tex;

    if (tmu == GFX_TMU0) num_tex = 1;
    else num_tex = 0;

    if (num_tex == 0)
    {
        static int last_function = 0;
        static int last_factor = 0;
        static int last_afunction = 0;
        static int last_afactor = 0;
        static int last_rgb_invert = 0;

        if (last_function == rgb_function && last_factor == rgb_factor &&
            last_afunction == alpha_function && last_afactor == alpha_factor &&
            last_rgb_invert == rgb_invert && first_texture0 == 0 && !tex0_combiner_ext) return;
        first_texture0 = 0;
        tex0_combiner_ext = 0;

        last_function = rgb_function;
        last_factor = rgb_factor;
        last_afunction = alpha_function;
        last_afactor = alpha_factor;
        last_rgb_invert = rgb_invert;
        texture0_combiner_key = rgb_function | (rgb_factor << 4) |
            (alpha_function << 8) | (alpha_factor << 12) |
            (rgb_invert << 16);
        texture0_combinera_key = 0;
        strcpy(fragment_shader_texture0, "");
    }
    else
    {
        static int last_function = 0;
        static int last_factor = 0;
        static int last_afunction = 0;
        static int last_afactor = 0;
        static int last_rgb_invert = 0;

        if (last_function == rgb_function && last_factor == rgb_factor &&
            last_afunction == alpha_function && last_afactor == alpha_factor &&
            last_rgb_invert == rgb_invert && first_texture1 == 0 && !tex1_combiner_ext) return;
        first_texture1 = 0;
        tex1_combiner_ext = 0;

        last_function = rgb_function;
        last_factor = rgb_factor;
        last_afunction = alpha_function;
        last_afactor = alpha_factor;
        last_rgb_invert = rgb_invert;

        texture1_combiner_key = rgb_function | (rgb_factor << 4) |
            (alpha_function << 8) | (alpha_factor << 12) |
            (rgb_invert << 16);
        texture1_combinera_key = 0;
        strcpy(fragment_shader_texture1, "");
    }

    switch (rgb_function)
    {
    case GFX_COMBINE_FUNCTION_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = vec4(0.0); \n");
        break;
    case GFX_COMBINE_FUNCTION_LOCAL:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = readtex1; \n");
        break;
    case GFX_COMBINE_FUNCTION_LOCAL_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = vec4(readtex1.a); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER:
        writeGLSLTextureColorFactor(num_tex, rgb_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = texture0_color_factor * vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = texture1_color_factor * ctexture0; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL:
        writeGLSLTextureColorFactor(num_tex, rgb_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = texture0_color_factor * vec4(0.0) + readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = texture1_color_factor * ctexture0 + readtex1; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL_ALPHA:
        writeGLSLTextureColorFactor(num_tex, rgb_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = texture0_color_factor * vec4(0.0) + vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = texture1_color_factor * ctexture0 + vec4(readtex1.a); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL:
        writeGLSLTextureColorFactor(num_tex, rgb_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = texture0_color_factor * (vec4(0.0) - readtex0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = texture1_color_factor * (ctexture0 - readtex1); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL_ADD_LOCAL:
        writeGLSLTextureColorFactor(num_tex, rgb_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = texture0_color_factor * (vec4(0.0) - readtex0) + readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = texture1_color_factor * (ctexture0 - readtex1) + readtex1; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL_ADD_LOCAL_ALPHA:
        writeGLSLTextureColorFactor(num_tex, rgb_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = texture0_color_factor * (vec4(0.0) - readtex0) + vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = texture1_color_factor * (ctexture0 - readtex1) + vec4(readtex1.a); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_MINUS_LOCAL_ADD_LOCAL:
        writeGLSLTextureColorFactor(num_tex, rgb_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = texture0_color_factor * (-readtex0) + readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = texture1_color_factor * (-readtex1) + readtex1; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_MINUS_LOCAL_ADD_LOCAL_ALPHA:
        writeGLSLTextureColorFactor(num_tex, rgb_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = texture0_color_factor * (-readtex0) + vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = texture1_color_factor * (-readtex1) + vec4(readtex1.a); \n");
        break;
    default:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctexture0 = readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctexture1 = readtex1; \n");
        WriteTrace(TraceGlitch, TraceWarning, "grTextCombine: Unknown RGB function: %x", rgb_function);
    }

    if (rgb_invert)
    {
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0 = vec4(1.0) - ctexture0; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1 = vec4(1.0) - ctexture1; \n");
    }

    switch (alpha_function)
    {
    case GFX_COMBINE_FACTOR_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = 0.0; \n");
        break;
    case GFX_COMBINE_FUNCTION_LOCAL:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = readtex1.a; \n");
        break;
    case GFX_COMBINE_FUNCTION_LOCAL_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = readtex1.a; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER:
        writeGLSLTextureAlphaFactor(num_tex, alpha_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = texture0_alpha_factor * 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = texture1_alpha_factor * ctexture0.a; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL:
        writeGLSLTextureAlphaFactor(num_tex, alpha_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = texture0_alpha_factor * 0.0 + readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = texture1_alpha_factor * ctexture0.a + readtex1.a; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL_ALPHA:
        writeGLSLTextureAlphaFactor(num_tex, alpha_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = texture0_alpha_factor * 0.0 + readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = texture1_alpha_factor * ctexture0.a + readtex1.a; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL:
        writeGLSLTextureAlphaFactor(num_tex, alpha_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = texture0_alpha_factor * (0.0 - readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = texture1_alpha_factor * (ctexture0.a - readtex1.a); \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL_ADD_LOCAL:
        writeGLSLTextureAlphaFactor(num_tex, alpha_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = texture0_alpha_factor * (0.0 - readtex0.a) + readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = texture1_alpha_factor * (ctexture0.a - readtex1.a) + readtex1.a; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_OTHER_MINUS_LOCAL_ADD_LOCAL_ALPHA:
        writeGLSLTextureAlphaFactor(num_tex, alpha_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = texture0_alpha_factor * (0.0 - readtex0.a) + readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = texture1_alpha_factor * (ctexture0.a - readtex1.a) + readtex1.a; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_MINUS_LOCAL_ADD_LOCAL:
        writeGLSLTextureAlphaFactor(num_tex, alpha_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = texture0_alpha_factor * (-readtex0.a) + readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = texture1_alpha_factor * (-readtex1.a) + readtex1.a; \n");
        break;
    case GFX_COMBINE_FUNCTION_SCALE_MINUS_LOCAL_ADD_LOCAL_ALPHA:
        writeGLSLTextureAlphaFactor(num_tex, alpha_factor);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = texture0_alpha_factor * (-readtex0.a) + readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = texture1_alpha_factor * (-readtex1.a) + readtex1.a; \n");
        break;
    default:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = ctexture0.a; \n");
        WriteTrace(TraceGlitch, TraceWarning, "grTextCombine: Unknown alpha function: %x", alpha_function);
    }

    if (alpha_invert)
    {
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctexture0.a = 1.0 - ctexture0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctexture1.a = 1.0 - ctexture1.a; \n");
    }
    need_to_compile = 1;
}

void gfxAlphaBlendFunction(gfxAlphaBlendFnc_t rgb_sf, gfxAlphaBlendFnc_t rgb_df, gfxAlphaBlendFnc_t alpha_sf, gfxAlphaBlendFnc_t alpha_df)
{
    int sfactorRGB = 0, dfactorRGB = 0, sfactorAlpha = 0, dfactorAlpha = 0;
    WriteTrace(TraceGlitch, TraceDebug, "rgb_sf: %d rgb_df: %d alpha_sf: %d alpha_df: %d", rgb_sf, rgb_df, alpha_sf, alpha_df);

    switch (rgb_sf)
    {
    case GFX_BLEND_ZERO:
        sfactorRGB = GL_ZERO;
        break;
    case GFX_BLEND_SRC_ALPHA:
        sfactorRGB = GL_SRC_ALPHA;
        break;
    case GFX_BLEND_ONE:
        sfactorRGB = GL_ONE;
        break;
    case GFX_BLEND_ONE_MINUS_SRC_ALPHA:
        sfactorRGB = GL_ONE_MINUS_SRC_ALPHA;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaBlendFunction: rgb_sf = %x", rgb_sf);
    }

    switch (rgb_df)
    {
    case GFX_BLEND_ZERO:
        dfactorRGB = GL_ZERO;
        break;
    case GFX_BLEND_SRC_ALPHA:
        dfactorRGB = GL_SRC_ALPHA;
        break;
    case GFX_BLEND_ONE:
        dfactorRGB = GL_ONE;
        break;
    case GFX_BLEND_ONE_MINUS_SRC_ALPHA:
        dfactorRGB = GL_ONE_MINUS_SRC_ALPHA;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaBlendFunction: rgb_df = %x", rgb_df);
    }

    switch (alpha_sf)
    {
    case GFX_BLEND_ZERO:
        sfactorAlpha = GL_ZERO;
        break;
    case GFX_BLEND_ONE:
        sfactorAlpha = GL_ONE;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaBlendFunction: alpha_sf = %x", alpha_sf);
    }

    switch (alpha_df)
    {
    case GFX_BLEND_ZERO:
        dfactorAlpha = GL_ZERO;
        break;
    case GFX_BLEND_ONE:
        dfactorAlpha = GL_ONE;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaBlendFunction: alpha_df = %x", alpha_df);
    }
    glEnable(GL_BLEND);
    if (blend_func_separate_support)
        glBlendFuncSeparateEXT(sfactorRGB, dfactorRGB, sfactorAlpha, dfactorAlpha);
    else
        glBlendFunc(sfactorRGB, dfactorRGB);

    grDisplayGLError("gfxAlphaBlendFunction");
}

void gfxAlphaTestReferenceValue(gfxAlpha_t value)
{
    WriteTrace(TraceGlitch, TraceDebug, "Value: %d", value);
    alpha_ref = value;
    gfxAlphaTestFunction(alpha_func);
}

void gfxAlphaTestFunction(gfxCmpFnc_t function)
{
    WriteTrace(TraceGlitch, TraceDebug, "Function: %d", function);
    alpha_func = function;
    switch (function)
    {
    case GFX_CMP_GREATER:
        glAlphaFunc(GL_GREATER, alpha_ref / 255.0f);
        break;
    case GFX_CMP_GEQUAL:
        glAlphaFunc(GL_GEQUAL, alpha_ref / 255.0f);
        break;
    case GFX_CMP_ALWAYS:
        glAlphaFunc(GL_ALWAYS, alpha_ref / 255.0f);
        glDisable(GL_ALPHA_TEST);
        grDisplayGLError("gfxAlphaTestFunction :: GFX_CMP_ALWAYS");
        return;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown function: %x", function);
    }

    glEnable(GL_ALPHA_TEST);
    grDisplayGLError("gfxAlphaTestFunction");
}

// Fog

void gfxFogMode(gfxFogMode_t mode)
{
    WriteTrace(TraceGlitch, TraceDebug, "Mode: %d", mode);
    switch (mode)
    {
    case GFX_FOG_DISABLE:
        glDisable(GL_FOG);
        fog_enabled = 0;
        break;
    case GFX_FOG_WITH_TABLE_ON_Q:
        glEnable(GL_FOG);
        glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
        fog_enabled = 1;
        break;
    case GFX_FOG_WITH_TABLE_ON_FOGCOORD_EXT:
        glEnable(GL_FOG);
        glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
        fog_enabled = 2;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown mode: %x", mode);
    }
    need_to_compile = 1;

    grDisplayGLError("gfxFogMode");
}

void gfxFogGenerateLinear(float nearZ, float farZ)
{
    WriteTrace(TraceGlitch, TraceDebug, "nearZ: %f farZ: %f", nearZ, farZ);
    glFogi(GL_FOG_MODE, GL_LINEAR);
    glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
    glFogf(GL_FOG_START, nearZ / 255.0f);
    glFogf(GL_FOG_END, farZ / 255.0f);

    grDisplayGLError("gfxFogGenerateLinear");
}

void gfxFogColorValue(gfxColor_t fogcolor)
{
    float color[4];
    WriteTrace(TraceGlitch, TraceDebug, "fogcolor: %x", fogcolor);

    switch (lfb_color_fmt)
    {
    case GFX_COLORFORMAT_ARGB:
        color[3] = ((fogcolor >> 24) & 0xFF) / 255.0f;
        color[0] = ((fogcolor >> 16) & 0xFF) / 255.0f;
        color[1] = ((fogcolor >> 8) & 0xFF) / 255.0f;
        color[2] = (fogcolor & 0xFF) / 255.0f;
        break;
    case GFX_COLORFORMAT_RGBA:
        color[0] = ((fogcolor >> 24) & 0xFF) / 255.0f;
        color[1] = ((fogcolor >> 16) & 0xFF) / 255.0f;
        color[2] = ((fogcolor >> 8) & 0xFF) / 255.0f;
        color[3] = (fogcolor & 0xFF) / 255.0f;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown color format : %x", lfb_color_fmt);
    }

    glFogfv(GL_FOG_COLOR, color);
    grDisplayGLError("glFogfv");
}

// Chroma
void gfxChromakeyMode(gfxChromakeyMode_t mode)
{
    WriteTrace(TraceGlitch, TraceDebug, "Mode: %d", mode);
    switch (mode)
    {
    case GFX_CHROMAKEY_DISABLE:
        chroma_enabled = 0;
        break;
    case GFX_CHROMAKEY_ENABLE:
        chroma_enabled = 1;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "Unknown mode : %x", mode);
    }
    need_to_compile = 1;
}

void gfxChromakeyValue(gfxColor_t value)
{
    WriteTrace(TraceGlitch, TraceDebug, "Value: %d", value);
    int chroma_color_location;

    switch (lfb_color_fmt)
    {
    case GFX_COLORFORMAT_ARGB:
        chroma_color[3] = 1.0;//((value >> 24) & 0xFF) / 255.0f;
        chroma_color[0] = ((value >> 16) & 0xFF) / 255.0f;
        chroma_color[1] = ((value >> 8) & 0xFF) / 255.0f;
        chroma_color[2] = (value & 0xFF) / 255.0f;
        break;
    case GFX_COLORFORMAT_RGBA:
        chroma_color[0] = ((value >> 24) & 0xFF) / 255.0f;
        chroma_color[1] = ((value >> 16) & 0xFF) / 255.0f;
        chroma_color[2] = ((value >> 8) & 0xFF) / 255.0f;
        chroma_color[3] = 1.0;//(value & 0xFF) / 255.0f;
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxChromakeyValue: Unknown color format: %x", lfb_color_fmt);
    }

    chroma_color_location = glGetUniformLocationARB(program_object, "chroma_color");
    glUniform4fARB(chroma_color_location, chroma_color[0], chroma_color[1],
        chroma_color[2], chroma_color[3]);
    grDisplayGLError("gfxChromakeyValue");
}

void setPattern()
{
    int i;
    GLubyte stip[32 * 4];
    for (i = 0; i < 32; i++)
    {
        unsigned int val = rand() << 17 | (rand() & 1) << 16 | rand() << 1 | rand() & 1;
        stip[i * 4 + 0] = (val >> 24) & 0xFF;
        stip[i * 4 + 1] = (val >> 16) & 0xFF;
        stip[i * 4 + 2] = (val >> 8) & 0xFF;
        stip[i * 4 + 3] = val & 0xFF;
    }
    GLubyte texture[32 * 32 * 4];
    for (i = 0; i < 32; i++)
    {
        int j;
        for (j = 0; j < 4; j++)
        {
            texture[(i * 32 + j * 8 + 0) * 4 + 3] = ((stip[i * 4 + j] >> 7) & 1) ? 255 : 0;
            texture[(i * 32 + j * 8 + 1) * 4 + 3] = ((stip[i * 4 + j] >> 6) & 1) ? 255 : 0;
            texture[(i * 32 + j * 8 + 2) * 4 + 3] = ((stip[i * 4 + j] >> 5) & 1) ? 255 : 0;
            texture[(i * 32 + j * 8 + 3) * 4 + 3] = ((stip[i * 4 + j] >> 4) & 1) ? 255 : 0;
            texture[(i * 32 + j * 8 + 4) * 4 + 3] = ((stip[i * 4 + j] >> 3) & 1) ? 255 : 0;
            texture[(i * 32 + j * 8 + 5) * 4 + 3] = ((stip[i * 4 + j] >> 2) & 1) ? 255 : 0;
            texture[(i * 32 + j * 8 + 6) * 4 + 3] = ((stip[i * 4 + j] >> 1) & 1) ? 255 : 0;
            texture[(i * 32 + j * 8 + 7) * 4 + 3] = ((stip[i * 4 + j] >> 0) & 1) ? 255 : 0;
        }
    }
    glActiveTextureARB(GL_TEXTURE2_ARB);
    glEnable(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, 33 * 1024 * 1024);
    glTexImage2D(GL_TEXTURE_2D, 0, 4, 32, 32, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glDisable(GL_TEXTURE_2D);

    grDisplayGLError("setPattern");
}

void gfxStippleMode(gfxStippleMode_t mode)
{
    WriteTrace(TraceGlitch, TraceDebug, "Mode: %d", mode);
    switch (mode)
    {
    case GFX_STIPPLE_DISABLE:
        dither_enabled = 0;
        glActiveTextureARB(GL_TEXTURE2_ARB);
        glDisable(GL_TEXTURE_2D);
        break;
    case GFX_STIPPLE_PATTERN:
        setPattern();
        dither_enabled = 1;
        glActiveTextureARB(GL_TEXTURE2_ARB);
        glEnable(GL_TEXTURE_2D);
        break;
    case GFX_STIPPLE_ROTATE:
        setPattern();
        dither_enabled = 1;
        glActiveTextureARB(GL_TEXTURE2_ARB);
        glEnable(GL_TEXTURE_2D);
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxStippleMode:%x", mode);
    }

    need_to_compile = 1;
    grDisplayGLError("gfxStippleMode");
}

void gfxColorCombineExt(gfxCCUColor_t a, gfxCombineMode_t a_mode, gfxCCUColor_t b, gfxCombineMode_t b_mode, gfxCCUColor_t c, bool c_invert, gfxCCUColor_t d, bool d_invert, uint32_t shift, bool invert)
{
    WriteTrace(TraceGlitch, TraceDebug, "a: %d a_mode: %d b: %d b_mode: %d c: %d c_invert: %d d: %d d_invert: %d shift: %d invert: %d", a, a_mode, b, b_mode, c, c_invert, d, d_invert, shift, invert);
    if (invert) WriteTrace(TraceGlitch, TraceWarning, "gfxColorCombineExt: Inverted result");
    if (shift) WriteTrace(TraceGlitch, TraceWarning, "gfxColorCombineExt: Shift = %d", shift);

    color_combiner_key = 0x80000000 | (a & 0x1F) | ((a_mode & 3) << 5) |
        ((b & 0x1F) << 7) | ((b_mode & 3) << 12) |
        ((c & 0x1F) << 14) | ((c_invert & 1) << 19) |
        ((d & 0x1F) << 20) | ((d_invert & 1) << 25);
    c_combiner_ext = 1;
    strcpy(fragment_shader_color_combiner, "");

    switch (a)
    {
    case GFX_CMBX_ZERO:
        strcat(fragment_shader_color_combiner, "vec4 cs_a = vec4(0.0); \n");
        break;
    case GFX_CMBX_TEXTURE_ALPHA:
        strcat(fragment_shader_color_combiner, "vec4 cs_a = vec4(ctexture1.a); \n");
        break;
    case GFX_CMBX_CONSTANT_ALPHA:
        strcat(fragment_shader_color_combiner, "vec4 cs_a = vec4(constant_color.a); \n");
        break;
    case GFX_CMBX_CONSTANT_COLOR:
        strcat(fragment_shader_color_combiner, "vec4 cs_a = constant_color; \n");
        break;
    case GFX_CMBX_ITALPHA:
        strcat(fragment_shader_color_combiner, "vec4 cs_a = vec4(gl_Color.a); \n");
        break;
    case GFX_CMBX_ITRGB:
        strcat(fragment_shader_color_combiner, "vec4 cs_a = gl_Color; \n");
        break;
    case GFX_CMBX_TEXTURE_RGB:
        strcat(fragment_shader_color_combiner, "vec4 cs_a = ctexture1; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxColorCombineExt: a = %x", a);
        strcat(fragment_shader_color_combiner, "vec4 cs_a = vec4(0.0); \n");
    }

    switch (a_mode)
    {
    case GFX_FUNC_MODE_ZERO:
        strcat(fragment_shader_color_combiner, "vec4 c_a = vec4(0.0); \n");
        break;
    case GFX_FUNC_MODE_X:
        strcat(fragment_shader_color_combiner, "vec4 c_a = cs_a; \n");
        break;
    case GFX_FUNC_MODE_ONE_MINUS_X:
        strcat(fragment_shader_color_combiner, "vec4 c_a = vec4(1.0) - cs_a; \n");
        break;
    case GFX_FUNC_MODE_NEGATIVE_X:
        strcat(fragment_shader_color_combiner, "vec4 c_a = -cs_a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "a_mode = %x", a_mode);
        strcat(fragment_shader_color_combiner, "vec4 c_a = vec4(0.0); \n");
    }

    switch (b)
    {
    case GFX_CMBX_ZERO:
        strcat(fragment_shader_color_combiner, "vec4 cs_b = vec4(0.0); \n");
        break;
    case GFX_CMBX_TEXTURE_ALPHA:
        strcat(fragment_shader_color_combiner, "vec4 cs_b = vec4(ctexture1.a); \n");
        break;
    case GFX_CMBX_CONSTANT_ALPHA:
        strcat(fragment_shader_color_combiner, "vec4 cs_b = vec4(constant_color.a); \n");
        break;
    case GFX_CMBX_CONSTANT_COLOR:
        strcat(fragment_shader_color_combiner, "vec4 cs_b = constant_color; \n");
        break;
    case GFX_CMBX_ITALPHA:
        strcat(fragment_shader_color_combiner, "vec4 cs_b = vec4(gl_Color.a); \n");
        break;
    case GFX_CMBX_ITRGB:
        strcat(fragment_shader_color_combiner, "vec4 cs_b = gl_Color; \n");
        break;
    case GFX_CMBX_TEXTURE_RGB:
        strcat(fragment_shader_color_combiner, "vec4 cs_b = ctexture1; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxColorCombineExt: b = %x", b);
        strcat(fragment_shader_color_combiner, "vec4 cs_b = vec4(0.0); \n");
    }

    switch (b_mode)
    {
    case GFX_FUNC_MODE_ZERO:
        strcat(fragment_shader_color_combiner, "vec4 c_b = vec4(0.0); \n");
        break;
    case GFX_FUNC_MODE_X:
        strcat(fragment_shader_color_combiner, "vec4 c_b = cs_b; \n");
        break;
    case GFX_FUNC_MODE_ONE_MINUS_X:
        strcat(fragment_shader_color_combiner, "vec4 c_b = vec4(1.0) - cs_b; \n");
        break;
    case GFX_FUNC_MODE_NEGATIVE_X:
        strcat(fragment_shader_color_combiner, "vec4 c_b = -cs_b; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxColorCombineExt: b_mode = %x", b_mode);
        strcat(fragment_shader_color_combiner, "vec4 c_b = vec4(0.0); \n");
    }

    switch (c)
    {
    case GFX_CMBX_ZERO:
        strcat(fragment_shader_color_combiner, "vec4 c_c = vec4(0.0); \n");
        break;
    case GFX_CMBX_TEXTURE_ALPHA:
        strcat(fragment_shader_color_combiner, "vec4 c_c = vec4(ctexture1.a); \n");
        break;
    case GFX_CMBX_ALOCAL:
        strcat(fragment_shader_color_combiner, "vec4 c_c = vec4(c_b.a); \n");
        break;
    case GFX_CMBX_AOTHER:
        strcat(fragment_shader_color_combiner, "vec4 c_c = vec4(c_a.a); \n");
        break;
    case GFX_CMBX_B:
        strcat(fragment_shader_color_combiner, "vec4 c_c = cs_b; \n");
        break;
    case GFX_CMBX_CONSTANT_ALPHA:
        strcat(fragment_shader_color_combiner, "vec4 c_c = vec4(constant_color.a); \n");
        break;
    case GFX_CMBX_CONSTANT_COLOR:
        strcat(fragment_shader_color_combiner, "vec4 c_c = constant_color; \n");
        break;
    case GFX_CMBX_ITALPHA:
        strcat(fragment_shader_color_combiner, "vec4 c_c = vec4(gl_Color.a); \n");
        break;
    case GFX_CMBX_ITRGB:
        strcat(fragment_shader_color_combiner, "vec4 c_c = gl_Color; \n");
        break;
    case GFX_CMBX_TEXTURE_RGB:
        strcat(fragment_shader_color_combiner, "vec4 c_c = ctexture1; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxColorCombineExt : c = %x", c);
        strcat(fragment_shader_color_combiner, "vec4 c_c = vec4(0.0); \n");
    }

    if (c_invert)
        strcat(fragment_shader_color_combiner, "c_c = vec4(1.0) - c_c; \n");

    switch (d)
    {
    case GFX_CMBX_ZERO:
        strcat(fragment_shader_color_combiner, "vec4 c_d = vec4(0.0); \n");
        break;
    case GFX_CMBX_ALOCAL:
        strcat(fragment_shader_color_combiner, "vec4 c_d = vec4(c_b.a); \n");
        break;
    case GFX_CMBX_B:
        strcat(fragment_shader_color_combiner, "vec4 c_d = cs_b; \n");
        break;
    case GFX_CMBX_TEXTURE_RGB:
        strcat(fragment_shader_color_combiner, "vec4 c_d = ctexture1; \n");
        break;
    case GFX_CMBX_ITRGB:
        strcat(fragment_shader_color_combiner, "vec4 c_d = gl_Color; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxColorCombineExt: d = %x", d);
        strcat(fragment_shader_color_combiner, "vec4 c_d = vec4(0.0); \n");
    }

    if (d_invert)
        strcat(fragment_shader_color_combiner, "c_d = vec4(1.0) - c_d; \n");

    strcat(fragment_shader_color_combiner, "gl_FragColor = (c_a + c_b) * c_c + c_d; \n");

    need_to_compile = 1;
}

void gfxAlphaCombineExt(gfxACUColor_t a, gfxCombineMode_t a_mode, gfxACUColor_t b, gfxCombineMode_t b_mode, gfxACUColor_t c, bool c_invert, gfxACUColor_t d, bool d_invert, uint32_t shift, bool invert)
{
    WriteTrace(TraceGlitch, TraceDebug, "a: %d a_mode: %d b: %d b_mode: %d c: %d c_invert: %d d: %d d_invert: %d shift: %d invert: %d", a, a_mode, b, b_mode, c, c_invert, d, d_invert, shift, invert);
    if (invert) WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaCombineExt: Inverted result");
    if (shift) WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaCombineExt: Shift = %d", shift);

    alpha_combiner_key = 0x80000000 | (a & 0x1F) | ((a_mode & 3) << 5) |
        ((b & 0x1F) << 7) | ((b_mode & 3) << 12) |
        ((c & 0x1F) << 14) | ((c_invert & 1) << 19) |
        ((d & 0x1F) << 20) | ((d_invert & 1) << 25);
    a_combiner_ext = 1;
    strcpy(fragment_shader_alpha_combiner, "");

    switch (a)
    {
    case GFX_CMBX_ZERO:
        strcat(fragment_shader_alpha_combiner, "float as_a = 0.0; \n");
        break;
    case GFX_CMBX_TEXTURE_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float as_a = ctexture1.a; \n");
        break;
    case GFX_CMBX_CONSTANT_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float as_a = constant_color.a; \n");
        break;
    case GFX_CMBX_ITALPHA:
        strcat(fragment_shader_alpha_combiner, "float as_a = gl_Color.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaCombineExt: a = %x", a);
        strcat(fragment_shader_alpha_combiner, "float as_a = 0.0; \n");
    }

    switch (a_mode)
    {
    case GFX_FUNC_MODE_ZERO:
        strcat(fragment_shader_alpha_combiner, "float a_a = 0.0; \n");
        break;
    case GFX_FUNC_MODE_X:
        strcat(fragment_shader_alpha_combiner, "float a_a = as_a; \n");
        break;
    case GFX_FUNC_MODE_ONE_MINUS_X:
        strcat(fragment_shader_alpha_combiner, "float a_a = 1.0 - as_a; \n");
        break;
    case GFX_FUNC_MODE_NEGATIVE_X:
        strcat(fragment_shader_alpha_combiner, "float a_a = -as_a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaCombineExt: a_mode = %x", a_mode);
        strcat(fragment_shader_alpha_combiner, "float a_a = 0.0; \n");
    }

    switch (b)
    {
    case GFX_CMBX_ZERO:
        strcat(fragment_shader_alpha_combiner, "float as_b = 0.0; \n");
        break;
    case GFX_CMBX_TEXTURE_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float as_b = ctexture1.a; \n");
        break;
    case GFX_CMBX_CONSTANT_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float as_b = constant_color.a; \n");
        break;
    case GFX_CMBX_ITALPHA:
        strcat(fragment_shader_alpha_combiner, "float as_b = gl_Color.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaCombineExt: b = %x", b);
        strcat(fragment_shader_alpha_combiner, "float as_b = 0.0; \n");
    }

    switch (b_mode)
    {
    case GFX_FUNC_MODE_ZERO:
        strcat(fragment_shader_alpha_combiner, "float a_b = 0.0; \n");
        break;
    case GFX_FUNC_MODE_X:
        strcat(fragment_shader_alpha_combiner, "float a_b = as_b; \n");
        break;
    case GFX_FUNC_MODE_ONE_MINUS_X:
        strcat(fragment_shader_alpha_combiner, "float a_b = 1.0 - as_b; \n");
        break;
    case GFX_FUNC_MODE_NEGATIVE_X:
        strcat(fragment_shader_alpha_combiner, "float a_b = -as_b; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaCombineExt: b_mode = %x", b_mode);
        strcat(fragment_shader_alpha_combiner, "float a_b = 0.0; \n");
    }

    switch (c)
    {
    case GFX_CMBX_ZERO:
        strcat(fragment_shader_alpha_combiner, "float a_c = 0.0; \n");
        break;
    case GFX_CMBX_TEXTURE_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float a_c = ctexture1.a; \n");
        break;
    case GFX_CMBX_ALOCAL:
        strcat(fragment_shader_alpha_combiner, "float a_c = as_b; \n");
        break;
    case GFX_CMBX_AOTHER:
        strcat(fragment_shader_alpha_combiner, "float a_c = as_a; \n");
        break;
    case GFX_CMBX_B:
        strcat(fragment_shader_alpha_combiner, "float a_c = as_b; \n");
        break;
    case GFX_CMBX_CONSTANT_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float a_c = constant_color.a; \n");
        break;
    case GFX_CMBX_ITALPHA:
        strcat(fragment_shader_alpha_combiner, "float a_c = gl_Color.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaCombineExt: c = %x", c);
        strcat(fragment_shader_alpha_combiner, "float a_c = 0.0; \n");
    }

    if (c_invert)
        strcat(fragment_shader_alpha_combiner, "a_c = 1.0 - a_c; \n");

    switch (d)
    {
    case GFX_CMBX_ZERO:
        strcat(fragment_shader_alpha_combiner, "float a_d = 0.0; \n");
        break;
    case GFX_CMBX_TEXTURE_ALPHA:
        strcat(fragment_shader_alpha_combiner, "float a_d = ctexture1.a; \n");
        break;
    case GFX_CMBX_ALOCAL:
        strcat(fragment_shader_alpha_combiner, "float a_d = as_b; \n");
        break;
    case GFX_CMBX_B:
        strcat(fragment_shader_alpha_combiner, "float a_d = as_b; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxAlphaCombineExt: d = %x", d);
        strcat(fragment_shader_alpha_combiner, "float a_d = 0.0; \n");
    }

    if (d_invert)
        strcat(fragment_shader_alpha_combiner, "a_d = 1.0 - a_d; \n");

    strcat(fragment_shader_alpha_combiner, "gl_FragColor.a = (a_a + a_b) * a_c + a_d; \n");

    need_to_compile = 1;
}

void gfxTexColorCombineExt(gfxChipID_t tmu, gfxTCCUColor_t a, gfxCombineMode_t a_mode, gfxTCCUColor_t b, gfxCombineMode_t b_mode, gfxTCCUColor_t c, bool c_invert, gfxTCCUColor_t d, bool d_invert, uint32_t shift, bool invert)
{
    int num_tex;
    WriteTrace(TraceGlitch, TraceDebug, "tmu: %d a: %d a_mode: %d b: %d b_mode: %d c: %d c_invert: %d d: %d d_invert: %d shift: %d invert: %d", tmu, a, a_mode, b, b_mode, c, c_invert, d, d_invert, shift, invert);

    if (invert) WriteTrace(TraceGlitch, TraceWarning, "gfxTexColorCombineExt: Inverted result");
    if (shift) WriteTrace(TraceGlitch, TraceWarning, "gfxTexColorCombineExt: Shift = %d", shift);

    if (tmu == GFX_TMU0) num_tex = 1;
    else num_tex = 0;

    if (num_tex == 0)
    {
        texture0_combiner_key = 0x80000000 | (a & 0x1F) | ((a_mode & 3) << 5) |
            ((b & 0x1F) << 7) | ((b_mode & 3) << 12) |
            ((c & 0x1F) << 14) | ((c_invert & 1) << 19) |
            ((d & 0x1F) << 20) | ((d_invert & 1) << 25);
        tex0_combiner_ext = 1;
        strcpy(fragment_shader_texture0, "");
    }
    else
    {
        texture1_combiner_key = 0x80000000 | (a & 0x1F) | ((a_mode & 3) << 5) |
            ((b & 0x1F) << 7) | ((b_mode & 3) << 12) |
            ((c & 0x1F) << 14) | ((c_invert & 1) << 19) |
            ((d & 0x1F) << 20) | ((d_invert & 1) << 25);
        tex1_combiner_ext = 1;
        strcpy(fragment_shader_texture1, "");
    }

    switch (a)
    {
    case GFX_CMBX_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = vec4(0.0); \n");
        break;
    case GFX_CMBX_ITALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = vec4(gl_Color.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = vec4(gl_Color.a); \n");
        break;
    case GFX_CMBX_ITRGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = gl_Color; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = gl_Color; \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = vec4(readtex1.a); \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_RGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = readtex1; \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = vec4(ctexture0.a); \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_RGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = ctexture0; \n");
        break;
    case GFX_CMBX_TMU_CCOLOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = ccolor0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = ccolor1; \n");
        break;
    case GFX_CMBX_TMU_CALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = vec4(ccolor0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = vec4(ccolor1.a); \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexColorCombineExt: a = %x", a);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_a = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_a = vec4(0.0); \n");
    }

    switch (a_mode)
    {
    case GFX_FUNC_MODE_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_a = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_a = vec4(0.0); \n");
        break;
    case GFX_FUNC_MODE_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_a = ctex0s_a; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_a = ctex1s_a; \n");
        break;
    case GFX_FUNC_MODE_ONE_MINUS_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_a = vec4(1.0) - ctex0s_a; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_a = vec4(1.0) - ctex1s_a; \n");
        break;
    case GFX_FUNC_MODE_NEGATIVE_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_a = -ctex0s_a; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_a = -ctex1s_a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexColorCombineExt: a_mode = %x", a_mode);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_a = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_a = vec4(0.0); \n");
    }

    switch (b)
    {
    case GFX_CMBX_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = vec4(0.0); \n");
        break;
    case GFX_CMBX_ITALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = vec4(gl_Color.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = vec4(gl_Color.a); \n");
        break;
    case GFX_CMBX_ITRGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = gl_Color; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = gl_Color; \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = vec4(readtex1.a); \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_RGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = readtex1; \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = vec4(ctexture0.a); \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_RGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = ctexture0; \n");
        break;
    case GFX_CMBX_TMU_CALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = vec4(ccolor0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = vec4(ccolor1.a); \n");
        break;
    case GFX_CMBX_TMU_CCOLOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = ccolor0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = ccolor1; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexColorCombineExt: b = %x", b);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0s_b = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1s_b = vec4(0.0); \n");
    }

    switch (b_mode)
    {
    case GFX_FUNC_MODE_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_b = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_b = vec4(0.0); \n");
        break;
    case GFX_FUNC_MODE_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_b = ctex0s_b; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_b = ctex1s_b; \n");
        break;
    case GFX_FUNC_MODE_ONE_MINUS_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_b = vec4(1.0) - ctex0s_b; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_b = vec4(1.0) - ctex1s_b; \n");
        break;
    case GFX_FUNC_MODE_NEGATIVE_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_b = -ctex0s_b; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_b = -ctex1s_b; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexColorCombineExt: b_mode = %x", b_mode);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_b = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_b = vec4(0.0); \n");
    }

    switch (c)
    {
    case GFX_CMBX_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = vec4(0.0); \n");
        break;
    case GFX_CMBX_B:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = ctex0s_b; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = ctex1s_b; \n");
        break;
    case GFX_CMBX_DETAIL_FACTOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = vec4(lambda); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = vec4(lambda); \n");
        break;
    case GFX_CMBX_ITRGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = gl_Color; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = gl_Color; \n");
        break;
    case GFX_CMBX_ITALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = vec4(gl_Color.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = vec4(gl_Color.a); \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = vec4(readtex1.a); \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_RGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = readtex0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = readtex1; \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = vec4(ctexture0.a); \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_RGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = ctexture0; \n");
        break;
    case GFX_CMBX_TMU_CALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = vec4(ccolor0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = vec4(ccolor1.a); \n");
        break;
    case GFX_CMBX_TMU_CCOLOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = ccolor0; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = ccolor1; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexColorCombineExt: c = %x", c);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_c = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_c = vec4(0.0); \n");
    }

    if (c_invert)
    {
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c = vec4(1.0) - ctex0_c; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c = vec4(1.0) - ctex1_c; \n");
    }

    switch (d)
    {
    case GFX_CMBX_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_d = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_d = vec4(0.0); \n");
        break;
    case GFX_CMBX_B:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_d = ctex0s_b; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_d = ctex1s_b; \n");
        break;
    case GFX_CMBX_ITRGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_d = gl_Color; \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_d = gl_Color; \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_d = vec4(readtex0.a); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_d = vec4(readtex1.a); \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexColorCombineExt: d = %x", d);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "vec4 ctex0_d = vec4(0.0); \n");
        else
            strcat(fragment_shader_texture1, "vec4 ctex1_d = vec4(0.0); \n");
    }

    if (d_invert)
    {
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_d = vec4(1.0) - ctex0_d; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_d = vec4(1.0) - ctex1_d; \n");
    }

    if (num_tex == 0)
        strcat(fragment_shader_texture0, "vec4 ctexture0 = (ctex0_a + ctex0_b) * ctex0_c + ctex0_d; \n");
    else
        strcat(fragment_shader_texture1, "vec4 ctexture1 = (ctex1_a + ctex1_b) * ctex1_c + ctex1_d; \n");
    need_to_compile = 1;
}

void gfxTexAlphaCombineExt(gfxChipID_t tmu, gfxTACUColor_t a, gfxCombineMode_t a_mode, gfxTACUColor_t b, gfxCombineMode_t b_mode, gfxTACUColor_t c, bool c_invert, gfxTACUColor_t d, bool d_invert, uint32_t shift, bool invert)
{
    int num_tex;
    WriteTrace(TraceGlitch, TraceDebug, "tmu: %d a: %d a_mode: %d b: %d b_mode: %d c: %d c_invert: %d d: %d d_invert: %d shift, invert: %d", tmu, a, a_mode, b, b_mode, c, c_invert, d, d_invert, shift, invert);

    if (invert) WriteTrace(TraceGlitch, TraceWarning, "gfxTexAlphaCombineExt: Inverted result");
    if (shift) WriteTrace(TraceGlitch, TraceWarning, "gfxTexAlphaCombineExt: Shift = %d", shift);

    if (tmu == GFX_TMU0) num_tex = 1;
    else num_tex = 0;

    if (num_tex == 0)
    {
        texture0_combinera_key = 0x80000000 | (a & 0x1F) | ((a_mode & 3) << 5) |
            ((b & 0x1F) << 7) | ((b_mode & 3) << 12) |
            ((c & 0x1F) << 14) | ((c_invert & 1) << 19) |
            ((d & 0x1F) << 20) | ((d_invert & 1) << 25);
    }
    else
    {
        texture1_combinera_key = 0x80000000 | (a & 0x1F) | ((a_mode & 3) << 5) |
            ((b & 0x1F) << 7) | ((b_mode & 3) << 12) |
            ((c & 0x1F) << 14) | ((c_invert & 1) << 19) |
            ((d & 0x1F) << 20) | ((d_invert & 1) << 25);
    }

    switch (a)
    {
    case GFX_CMBX_ITALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_a.a = gl_Color.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_a.a = gl_Color.a; \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_a.a = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_a.a = readtex1.a; \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_a.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_a.a = ctexture0.a; \n");
        break;
    case GFX_CMBX_TMU_CALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_a.a = ccolor0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_a.a = ccolor1.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexAlphaCombineExt: a = %x", a);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_a.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_a.a = 0.0; \n");
    }

    switch (a_mode)
    {
    case GFX_FUNC_MODE_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_a.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_a.a = 0.0; \n");
        break;
    case GFX_FUNC_MODE_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_a.a = ctex0s_a.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_a.a = ctex1s_a.a; \n");
        break;
    case GFX_FUNC_MODE_ONE_MINUS_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_a.a = 1.0 - ctex0s_a.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_a.a = 1.0 - ctex1s_a.a; \n");
        break;
    case GFX_FUNC_MODE_NEGATIVE_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_a.a = -ctex0s_a.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_a.a = -ctex1s_a.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexAlphaCombineExt: a_mode = %x", a_mode);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_a.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_a.a = 0.0; \n");
    }

    switch (b)
    {
    case GFX_CMBX_ITALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_b.a = gl_Color.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_b.a = gl_Color.a; \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_b.a = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_b.a = readtex1.a; \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_b.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_b.a = ctexture0.a; \n");
        break;
    case GFX_CMBX_TMU_CALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_b.a = ccolor0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_b.a = ccolor1.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexAlphaCombineExt: b = %x", b);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0s_b.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1s_b.a = 0.0; \n");
    }

    switch (b_mode)
    {
    case GFX_FUNC_MODE_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_b.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_b.a = 0.0; \n");
        break;
    case GFX_FUNC_MODE_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_b.a = ctex0s_b.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_b.a = ctex1s_b.a; \n");
        break;
    case GFX_FUNC_MODE_ONE_MINUS_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_b.a = 1.0 - ctex0s_b.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_b.a = 1.0 - ctex1s_b.a; \n");
        break;
    case GFX_FUNC_MODE_NEGATIVE_X:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_b.a = -ctex0s_b.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_b.a = -ctex1s_b.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexAlphaCombineExt: b_mode = %x", b_mode);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_b.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_b.a = 0.0; \n");
    }

    switch (c)
    {
    case GFX_CMBX_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = 0.0; \n");
        break;
    case GFX_CMBX_B:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = ctex0s_b.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = ctex1s_b.a; \n");
        break;
    case GFX_CMBX_DETAIL_FACTOR:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = lambda; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = lambda; \n");
        break;
    case GFX_CMBX_ITALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = gl_Color.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = gl_Color.a; \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = readtex1.a; \n");
        break;
    case GFX_CMBX_OTHER_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = ctexture0.a; \n");
        break;
    case GFX_CMBX_TMU_CALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = ccolor0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = ccolor1.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexAlphaCombineExt: c = %x", c);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = 0.0; \n");
    }

    if (c_invert)
    {
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_c.a = 1.0 - ctex0_c.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_c.a = 1.0 - ctex1_c.a; \n");
    }

    switch (d)
    {
    case GFX_CMBX_ZERO:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_d.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_d.a = 0.0; \n");
        break;
    case GFX_CMBX_B:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_d.a = ctex0s_b.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_d.a = ctex1s_b.a; \n");
        break;
    case GFX_CMBX_ITALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_d.a = gl_Color.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_d.a = gl_Color.a; \n");
        break;
    case GFX_CMBX_ITRGB:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_d.a = gl_Color.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_d.a = gl_Color.a; \n");
        break;
    case GFX_CMBX_LOCAL_TEXTURE_ALPHA:
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_d.a = readtex0.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_d.a = readtex1.a; \n");
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxTexAlphaCombineExt: d = %x", d);
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_d.a = 0.0; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_d.a = 0.0; \n");
    }

    if (d_invert)
    {
        if (num_tex == 0)
            strcat(fragment_shader_texture0, "ctex0_d.a = 1.0 - ctex0_d.a; \n");
        else
            strcat(fragment_shader_texture1, "ctex1_d.a = 1.0 - ctex1_d.a; \n");
    }

    if (num_tex == 0)
        strcat(fragment_shader_texture0, "ctexture0.a = (ctex0_a.a + ctex0_b.a) * ctex0_c.a + ctex0_d.a; \n");
    else
        strcat(fragment_shader_texture1, "ctexture1.a = (ctex1_a.a + ctex1_b.a) * ctex1_c.a + ctex1_d.a; \n");

    need_to_compile = 1;
}

void gfxConstantColorValueExt(gfxChipID_t tmu, gfxColor_t value)
{
    int num_tex;
    WriteTrace(TraceGlitch, TraceDebug, "tmu: %d value: %d", tmu, value);

    if (tmu == GFX_TMU0) num_tex = 1;
    else num_tex = 0;

    switch (lfb_color_fmt)
    {
    case GFX_COLORFORMAT_ARGB:
        if (num_tex == 0)
        {
            ccolor0[3] = ((value >> 24) & 0xFF) / 255.0f;
            ccolor0[0] = ((value >> 16) & 0xFF) / 255.0f;
            ccolor0[1] = ((value >> 8) & 0xFF) / 255.0f;
            ccolor0[2] = (value & 0xFF) / 255.0f;
        }
        else
        {
            ccolor1[3] = ((value >> 24) & 0xFF) / 255.0f;
            ccolor1[0] = ((value >> 16) & 0xFF) / 255.0f;
            ccolor1[1] = ((value >> 8) & 0xFF) / 255.0f;
            ccolor1[2] = (value & 0xFF) / 255.0f;
        }
        break;
    case GFX_COLORFORMAT_RGBA:
        if (num_tex == 0)
        {
            ccolor0[0] = ((value >> 24) & 0xFF) / 255.0f;
            ccolor0[1] = ((value >> 16) & 0xFF) / 255.0f;
            ccolor0[2] = ((value >> 8) & 0xFF) / 255.0f;
            ccolor0[3] = (value & 0xFF) / 255.0f;
        }
        else
        {
            ccolor1[0] = ((value >> 24) & 0xFF) / 255.0f;
            ccolor1[1] = ((value >> 16) & 0xFF) / 255.0f;
            ccolor1[2] = ((value >> 8) & 0xFF) / 255.0f;
            ccolor1[3] = (value & 0xFF) / 255.0f;
        }
        break;
    default:
        WriteTrace(TraceGlitch, TraceWarning, "gfxConstantColorValue: Unknown color format: %x", lfb_color_fmt);
    }

    if (num_tex == 0)
    {
        ccolor0_location = glGetUniformLocationARB(program_object, "ccolor0");
        glUniform4fARB(ccolor0_location, ccolor0[0], ccolor0[1], ccolor0[2], ccolor0[3]);
    }
    else
    {
        ccolor1_location = glGetUniformLocationARB(program_object, "ccolor1");
        glUniform4fARB(ccolor1_location, ccolor1[0], ccolor1[1], ccolor1[2], ccolor1[3]);
    }
    grDisplayGLError("gfxConstantColorValueExt");
}
